<!DOCTYPE html>
<html>
<head>
   <meta charset="UTF-8">
   <title>Interview</title>
</head>
<body>
<p>lcx</p>
<div id="content"></div>
<script>
   function writeHtml(content) {
       document.getElementById('content').innerHTML = content || '<div>暂无内容</div>';
   }
</script>
</body>
</html>